Every one of those men has brass balls.
I think that there was a ship that nearly grounded itself to provide heavy weapon fire that might have turned the tide. I'm not familiar with the exact battle other than thinking every that a movie shows what those men did, I cringe.
I bust balls with Army guys all the time but holy cow, those men were meat eating warriors.
I wonder if there is a diagram somewhere online that shows the field of fire and point of view of the hidden guns. I'm thinking that they were angled and provided 45 degree overlapping fields of fire. That way you couldn't hide behind anything with a flat front to the cliffs, cause your flank would still be exposed from the sides.